Page 1: Service Manual
MULTI AIR CONDITIONER INDOOR UNIT OUTDOOR UNIT FREE JOINT FIXED FREE JOINT FIXED MH020FVEA MH18VF1-09 MH040FXEA2B MH18VF1X MH023FVEA MH19VF1-07 MH050FXEA2B MH19VF1X MH026FVEA MH19VF1-12 MH060FXEA3B MH035FVEA MH070FXEA4B MH052FVEA MH080FXEA4B MH020FNEA MH026FNEA MH035FNEA MH052FNEA MH023FBEA MH026FBEA MH035FBEA MH052FBEA MH026FKEA MH035FKEA MH030FMEA MH035FMEA...
Page 2: Table Of Contents
Contents 1. Precautions ............................1-1 Installing the air conditioner ......................1-2 Power supply and circuit breaker ....................1-3 During operation ..........................1-4 Disposing of the unit ........................1-5 Others ..............................2. Product Specifications ......................2-1 The Feature of Product ......................... 2-2 Product Specifications ........................
Page 3 Contents 9. Troubleshooting ..........................9-1 Items to be checked first ........................ 9-2 Checking and Testing operations ....................9-3 Fault Diagnosis by Symptom 9-12 ....................... 9-4 PCB Inspection 9-18 ........................... 10. Reference for Installation 10-1 ....................... 10-1 Selecting Area for Installation ....................
Page 4: Precautions
Do not place a cloth or other materials over it. G Remove the batteries if you don’t use the remote control for a long time. (If applicable) G Use the remote control within 7 meters from the indoor unit. (If applicable) Samsung Electronics...
Page 5: Disposing Of The Unit
G Young children or infirm persons should be always supervised when they use the air conditioner. G Max current is measured according to IEC standard for safety. G Current is measured according to ISO standard for energy efficiency. Samsung Electronics...
Page 6: Product Specifications
• Felt Structure : New felt has selected to reduce the noise coming out of the compressor. Double layered felt structure absorbs noise by two times and felt is also covering top of the compressor to reduce the noise even more. Samsung Electronics...
Page 7: Product Specifications
ø9.52x7.5 ø9.52x7.5 ø9.52x7.5 ø18x535 ø18x535 ø18x535 Drain Hose DxL(mm) Cross Flow Fan Cross Flow Fan Cross Flow Fan Type Blower Type Resin/steel Resin/steel Resin/steel Motor Rated Output Heat Exchanger 2ROW 10STEP 2ROW 14STEP 2ROW 14STEP Refrigerant Control Unit Samsung Electronics...
Page 8 Heating 1,099x315x217 WxHxD Outer Dimension inch 43.3x12.4x8.5 Weight Liquid mmxL(m) ø6.35x7.5 Refrigerant Pipe Size mmxL(m) ø12.7x7.5 ø18x600 Drain Hose DxL(mm) Cross Flow Fan Type Blower Type Resin /steel Motor Rated Output Heat Exchanger 2ROW 16STEP Refrigerant Control Unit Samsung Electronics...
Page 9 ø9.52x7.5 ø9.52x7.5 ø12.7x7.5 ø18x550 ø18x550 ø18x920 Drain Hose DxL(mm) Cross Flow Fan Cross Flow Fan Cross Flow Fan Type Blower Type Resin/steel Resin/steel Resin/steel Motor Rated Output Heat Exchanger 2ROW 14STEP 2ROW 14STEP 2ROW 16STEP Refrigerant Control Unit Samsung Electronics...
Page 10 Product Specifications(cont.) Model MH023FVEA MH020FVEA MH026FVEA Item INDOOR UNIT Type Wall-mounted Wall-mounted Cooling 2.00 2.60 Heating 2.20 2.90 Dehumidifying Cooling Perfor- Air Volume /min mance Heating Cooling Noise dB(A) Heating Power ø,V,Hz 1,220~240,50 1,220~240,50 Cooling Power Consumption Heating Power Cooling 0.18...
Page 11 Liquid mmxL(m) ø6.35x7.5 ø6.35x7.5 Refrigerant Pipe Size mmxL(m) ø9.52x7.5 ø12.7x7.5 ø18x550 ø18x550 Drain Hose DxL(mm) Cross Flow Fan Cross Flow Fan Type Blower Type Resin/steel Resin/steel Motor Rated Output Heat Exchanger 2ROW 10STEP 2ROW 15STEP Refrigerant Control Unit Samsung Electronics...
Page 12 Liquid mmxL(m) ø6.35x7.5 ø6.35x7.5 Refrigerant Pipe Size mmxL(m) ø9.52x7.5 ø9.52x7.5 Drain Hose DxL(mm) ø20x2,000 ø20x2,000 Cross Flow Fan Cross Flow Fan Type steel steel Blower Type Motor Rated Output Heat Exchanger 2ROW 14STEP 2ROW 14STEP Refrigerant Control Unit Samsung Electronics...
Page 13 15.2 15.2 Liquid mmxL(m) ø6.35x7.5 ø6.35x7.5 Refrigerant Pipe Size mmxL(m) ø9.52x7.5 ø9.52x7.5 Drain Hose DxL(mm) ø20x2,000 ø20x2,000 Turbo Fan Turbo Fan Type steel steel Blower Type Motor Rated Output Heat Exchanger 2ROW 20STEP 2ROW 20STEP Refrigerant Control Unit Samsung Electronics...
Page 14 Liquid mmxL(m) ø6.35x7.5 ø6.35x7.5 ø6.35x7.5 Refrigerant Pipe Size mmxL(m) ø9.52x7.5 ø9.52x7.5 ø12.7x7.5 Type Turbo Fan Turbo Fan Turbo Fan Blower Type steel steel steel Motor Rated Output Heat Exchanger 2ROW 10STEP 2ROW 10STEP 2ROW 10STEP Refrigerant Control Unit Samsung Electronics...
Page 15 ø6.35x7.5 ø6.35x7.5 ø6.35x7.5 Refrigerant Pipe Size mmxL(m) ø9.52x7.5 ø9.52x7.5 ø12.7x7.5 Type Sirocco fan Sirocco fan Sirocco fan Resin/steel Resin/steel Resin/steel Blower Type Motor Rated Output Heat Exchanger 2ROW 12STEP 2ROW 12STEP 3ROW 10STEP Refrigerant Control Unit 2-10 Samsung Electronics...
Page 16 Propeller Propeller Propeller Blower Fan Motor Size ø400 ø420 ø400 ø400 & Rated Output Blower Motor Capacitor uFxVAC 2ROW 24STEP 2ROW 28STEP 2ROW 24STEP 2ROW 24STEP Heat Exchanger Refrigerant Control Device Charging Refrigerant(R410A) 1,300 2,000 1,300 1,300 Samsung Electronics 2-11...
Page 17 Capacity Protection Device Type Propeller Propeller Propeller Blower Fan Motor Size ø460 ø460 ø460 & Rated Output Blower Motor Capacitor uFxVAC Heat Exchanger 2ROW 36STEP 2ROW 36STEP 2ROW 36STEP Refrigerant Control Device Charging Refrigerant(R410A) 2,200 2,800 2,800 2-12 Samsung Electronics...
Page 18: The Comparative Specifications Of Product
2-3 The Comparative Specifications of Product Item MH040FXEA2B MH040FXEA2A Indoor Unit Design Outdoor Unit MH020FVEA MH020FPEA 7.5kg MH023FVEA MH026FPEA 8.5kg MH026FVEA MH035FPEA 8.5kg MH035FVEA MH020FWEA MH020FNEA MH023FWEA 9.0kg MH026FNEA 7.8kg MH026FWEA MH035FNEA MH035FWEA Indoor Unit MH023FBEA Net Weight MH026FKEA 15.0kg MH026FBEA 10.2kg...
Page 19 The Comparative Specifications of Product(cont.) Item MH040FXEA2B MH040FXEA2A MH020FVEA MH020FPEA MH023FVEA MH023FPEA 795x258x179mm 825x285x189mm MH026FVEA MH026FPEA MH035FVEA MH035FPEA 890x285x179mm MH020FNEA MH023FWEA MH026FNEA 825x285x189mm MH026FWEA 950x268x165mm MH035FNEA MH035FWEA Indoor Unit MH026FKEA MH023FBEA Outer 970x180x390mm MH035FKEA 900x304x185mm MH026FBEA Dimension MH035FBEA MH023FVEA MH026FKEA...
Page 20 The Comparative Specifications of Product(cont.) Item MH050FXEA2B MH052FXEA2A Indoor Unit Design Outdoor Unit MH020FVEA MH020FPEA MH023FVEA 8.5kg MH023FPEA 7.5kg MH026FVEA MH026FPEA MH035FVEA MH052FVEA 12.0kg 8.5kg MH035FPEA MH020FNEA 7.8kg MH026FNEA 13.0kg MH035FNEA MH052FPEA✳ 13.0kg MH052FNEA MH023FWEA MH023FBEA 9.0kg MH026FWEA 10.2kg MH026FBEA...
Page 21 The Comparative Specifications of Product(cont.) Item MH050FXEA2B MH052FXEA2A MH020FVEA MH020FPEA MH023FVEA MH023FPEA 795x258x179mm MH026FVEA MH035FVEA 825x285x189mm MH026FPEA MH020FNEA MH026FNEA 890x285x179mm MH035FPEA MH035FNEA MH052FPEA✳ 1,080x315x205mm MH052FVEA 1,065x298x214mm MH023FWEA MH023FBEA MH026FBEA 900x304x185mm 950x268x165mm MH026FWEA MH035FBEA MH035FWEA Indoor Unit Outer MH052FBEA 1,100x307x225mm MH052FWEA...
Page 22 Outdoor Unit MH✳✳VV1X 790x548x285mm 880x638x310mm MH✳✳VF1X MH✳✳VV1-07 32dB↓ 31dB↓ MH19VF1-07 MH✳✳VV1-09 32dB↓ Indoor Unit MH18VF1-09 Noise 35dB↓ MH✳✳VV1-12 MH19VF1-12 36dB↓ MH18VF1X MH✳✳VV1X Outdoor Unit 47dB↓/48dB↓(Cool/Heat) 51dB↓ MH19VF1X The Feature of Product BLDC INVERTER COMPRESSOR BLDC INVERTER COMPRESSOR Samsung Electronics 2-17...
Page 23 MH020FNEA MH026FNEA 7.8kg MH035FNEA MH052FNEA 13.0kg MH023FBEA 10.2kg MH026FBEA MH035FBEA MH052FBEA 13.0 kg MH026FJEA 15.2kg MH035FJEA MH052FUEA 29.0kg Net Weight Indoor Unit 8.5kg MH020FVEA MH023FVEA MH026FVEA 8.5kg MH035FVEA MH052FVEA 12.0kg MH026FKEA 15.0kg MH035FKEA MH030FMEA MH035FMEA 17.0kg MH052FMEA 2-18 Samsung Electronics...
Page 24 MH020FNEA MH026FNEA 825x285x189mm MH035FNEA 1,099x315x217mm MH052FNEA MH023FBEA MH026FBEA 900x304x185mm MH035FBEA MH052FBEA 1,100x307x225mm MH026FJEA 760x620x199mm MH035FJEA 900x260x480mm MH052FUEA Indoor Unit Outer MH020FVEA MH023FVEA Dimension 825x285x189mm MH026FVEA MH035FVEA 1,065x298x214mm MH052FVEA MH026FKEA 970x180x390mm MH035FKEA MH030FMEA MH035FMEA 575x575x260mm MH052FMEA MH023FEEA MH026FEEA 900x199x600mm MH035FEEA Outdoor Unit...
Page 25 The Comparative Specifications of Product(cont.) MH070FXEA4B MH070FXEA4A Item MH080FXEA4B MH080FXEA4A Indoor Unit Design Outdoor Unit MH020FVEA MH020FPEA MH023FVEA MH023FPEA 7.5kg 8.5kg MH026FVEA MH026FPEA MH035FVEA MH035FPEA 8.5kg 12.0kg MH052FVEA MH052FPEA✳ 13.0kg MH020FNEA MH026FNEA 7.8kg MH020FWEA MH035FNEA MH023FWEA 9.0kg MH026FWEA MH052FNEA 13.0kg...
Page 26 MH026FEEA MH026FEEA 26.0kg Indoor Unit MH035FEEA MH035FEEA Net Weight MH052FUEA 29.5kg MH052FEEA 31.0kg MH070FXEA4B Outdoor Unit 71.0kg MH080FXEA4B MH070FXEA4A 71.0kg MH080FXEA4A MH020FVEA MH020/023/026FPEA 795x258x179mm MH023FVEA MH026FVEA MH035FPEA 890x285x179mm MH035FVEA 825x285x189mm MH020FNEA MH052FPEA✳ 1,080x315x205mm MH026FNEA MH020FWEA MH035FNEA MH023FWEA 950x268x165mm MH052FVEA 1,065x298x214mm...
Page 27: Accessory And Option Specifications
DB70-00534A (MH✳✳✳FNEA/MH✳✳VF1-✳✳, Installation Plate except MH052FNEA) (Plate-Hanger) DB70-00703A (MH052FNEA) Remote Control DB93-03170Z Indoor Batteries for Remote Control DB47-90024A Unit User Manual DB98-28925A Installation Manual DB98-28926A ✳ The design and shape can be changed according to the model. 2-22 Samsung Electronics...
Page 28 DB70-00819A (MH✳✳FBEA except Installation Plate MH052FBEA) (Plate-Hanger) DB70-00824A (MH052FBEA) Remote Control DB93-04700S Indoor Batteries for Remote Control DB47-90024A Unit User Manual DB98-29019A Installation Manual DB98-29015A ✳ The design and shape can be changed according to the model. Samsung Electronics 2-23...
Page 29 Remote Control DB93-04700S Batteries for Remote Control DB47-90024A Indoor Unit User Manual DB98-29039A Installation Manual DB98-29040A DB39-00943D C/W COMM2 Wired Remote Controller cables DB39-01047A Connect Wire ✳ The design and shape can be changed according to the model. 2-24 Samsung Electronics...
Page 30 Insulation cover drain DB62-01959A Installation Manual DB98-27682A Indoor Unit Flexible hose DB94-01258C (Ass'y drain hose joint) Insulation drain DB62-01960B Rubber DB63-00237A (Grommet Hanger) Insulation cover band DB72-00109J ✳ The design and shape can be changed according to the model. Samsung Electronics 2-25...
Page 31 Pattern sheet DB69-01369A Insulation cover drain DB62-01959A Insulation-drain DB62-01960B Insulation cover band DB72-00109J Insulation pipe DB72-00109G Indoor Unit (MH030FMEA/ MH035FMEA) Insulation-Install inlet DB72-00143E (MH052FMEA) Insulation-drain DB72-00143G (MH052FMEA only) Cable-tie DB65-00191A Ass'y drain hose DB94-01270D M4x12 tapped Screw 6002-000213 2-26 Samsung Electronics...
Page 32 Product Specifications Indoor Unit Accessories(cont.) I MH✳✳✳FMEA(cont.) Item Descriptions Code-No. Q'TY Remark Installation manual DB98-27682A Indoor Unit Safety net DB63-01372A ✳ The design and shape can be changed according to the model. Samsung Electronics 2-27...
Page 33 Product Specifications Indoor Unit Accessories(cont.) I MH✳✳✳FJEA Item Descriptions Code-No. Q'TY Remark User Manual DB98-29318A Installation Manual DB98-29317A Seal-Install Outlet DB62-05580V Indoor Seal-Pipe SVC DB62-05691C Unit Cable-Tie DB65-10088C Wireless Remote Control DB93-06280E Battery DB47-90024A 2-28 Samsung Electronics...
Page 34 DB97-03906A/B Insulation-Install Outlet DB72-00143D Insulation-Install Inlet DB72-00143E Indoor Unit Drain Hose Joint DB94-00758A Rubber DB63-00237A (Grommet Hanger) Insulation-Drain Out DB62-03439H Insulation-Out DB62-03439J Insulation-Drain In DB62-03440H ✳ The design and shape can be changed according to the model. Samsung Electronics 2-29...
Page 35 Product Specifications Indoor Unit Accessories(cont.) I MH✳✳✳FEEA(cont.) Item Descriptions Code-No. Q'TY Remark Cable-tie DB65-10088C Indoor Drain Pipe Holder DB90-02064A Unit Wired remote controller Box DB97-01904G ✳ The design and shape can be changed according to the model. 2-30 Samsung Electronics...
Page 36 DB97-04273B User Manual DB98-24374A Installation Manual DB98-24373A DB62-03439J Insulation DB62-03439H Insulation Drain In DB62-03440H Indoor Unit DB72-00143E Insulation Install Inlet DB72-00143G Ass'y Holder Drain Pipe DB90-02064A Ass'y Drain Hose Join DB94-00758A Rubber DB63-00237A (Grommet Hanger) Cable-Tie DB65-10088C Samsung Electronics 2-31...
Page 37 Rubber Leg DB73-20134A DB60-30010A Flare Nuts, 6.35mm (only MH070FXEA4B/ outer pipe diameter MH080FXEA4B) DB60-30010B Flare Nuts, 9.52mm (only MH070FXEA4B/ outer pipe diameter MH080FXEA4B) Installation Manual DB98-28896A ✳ The design and shape can be changed according to the model. 2-32 Samsung Electronics...
Page 38 I MH040FXEA2B/MH050FXEA2B/MH060FXEA3B/MH070FXEA4B/MH080FXEA4B/MH18VF1X/MH19VF1X(cont.) Item Descriptions Code-No. Q'TY Remark Ass'y -Label Kyoto Protocol DB98-28756A Outdoor ) kg ) kg ) kg Unit (MH060FXEA3B) Nipple Connector DB67-00789A (MH070FXEA4B /MH080FXEA4B) ✳ The design and shape can be changed according to the model. Samsung Electronics 2-33...
Page 39 DB39-00378E (Wire Harness-DC Source) (MIM-B13) Transmitter communication cable DB39-00253B (Connect Wire-COM) (MIM-B13) Transmitter Case DB61-00450B (Case-Relay PCB Out) (MIM-B13) Cable-tie DB65-10088B DB98-25776A Installation Manual (MIM-B13) ✳ The design and shape can be changed according to the model. 2-34 Samsung Electronics...
Page 40: Alignment And Adjustments
Cable miss-wiring Cable connection (Indoor & Outdoor unit) MPI error malfunction Cable connection (another indoor unit & The number of indoor unit mismatched outdoor unit), SW01(outdoor) Compressor discharge sensor error(Short/Open) Outdoor unit Outdoor unit error Outdoor unit (Error code) Samsung Electronics...
Page 41 Indoor unit heat exchanger temperature sensor error (open or short) Indoor fan motor malfunction Option Setting EEPROM error Option error Option Setting (option wasn t set up or option data error) Remote Control on/off Outdoor unit error Outdoor Unit Power Reset Samsung Electronics...
Page 42 Error of setting option switches for optional accessories EEPROM error EEPROM option error : On : Flickering : Off N If you turn off the air conditioner when the LED is flickering, the LED is also turned off. Samsung Electronics...
Page 43 2. Outdoor unit error Main-Inverter Micom(After 1 minute of (Display is unrelated with Main-Inverter detection) operation) : On : Flickering : Off N If you turn off the air conditioner when the LED is flickering, the LED is also turned off. Samsung Electronics...
Page 44 Error of setting option switches for optional accessories EEPROM error EEPROM option error MPI no feedback Error : On : Flickering : Off N If you turn off the air conditioner when the LED is flickering, the LED is also turned off. Samsung Electronics...
Page 45 : Off N If you turn off the air conditioner when the LED is flickering, the LED is also turned off. N If you re-operate the air conditioner, it operates normally at first, then detect an error again. Samsung Electronics...
Page 46 : Off N If you turn off the air conditioner when the LED is flickering, the LED is also turned off. N If you re-operate the air conditioner, it operates normally at first, then detect an error again. Samsung Electronics...
Page 47: Outdoor Unit
Outdoor unit sensor error - Condenser out sensor(Short/Open) - Self diagnosis Compressor Discharge temperature sensor error Compressor discharge sensor detached - Self diagnosis Compressor OLP sensor error (Short/Open) - Error condition : outdoor temperature under -20˚C - Error level : over 4.95V(-30˚C) under 0.5V(151˚C) Samsung Electronics...
Page 48 DC peak error (IPM Over Current) Compressor Vlimit Error DC link Voltage error (under 150V, over 410V) Abnormal compressor running (Compressor Rotation Error) Current sensor error DC link Voltage sensor error OTP Error Inverter micom zero-crossing error Piping(gas leak) NO GAS error(self diagnosis) Samsung Electronics...
Page 49: Setting Option Setup Method
✳ Setting is not required if you must Push the button to set the display panel to a value which has a default. Every time you push the button, the display panel reads . . . repeatedly. 3-10 Samsung Electronics...
Page 50 If all lamps of indoor unit are flickering, Plug out, plug in power plug again and press ON/OFF key to retry. If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model. Samsung Electronics 3-11...
Page 51 ✳ Setting is not required if you must Push the button to set the display panel to Every time you push the button, the display panel reads a value which has a default..repeatedly. 3-12 Samsung Electronics...
Page 52 If all lamps of indoor unit are flickering, plug out, plug in power plug again and press the ON/OFF key to retry. If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model. Samsung Electronics 3-13...
Page 53 ✳ Setting is not required if you must Push the button to set the display panel to a value which has a default. Every time you push the button, the display panel reads . . . repeatedly. 3-14 Samsung Electronics...
Page 54 If all lamps of indoor unit are flickering, Plug out, plug in power plug again and press ON/OFF key to retry. If the unit is not working properly or all lamps are continuously flickering after setting the option code, see if the correct option code is set up for its model. Samsung Electronics 3-15...
Page 55 I Table of the option code MODEL OPTION CODE MH020FNEA 026402-13225E MH026FNEA 027402-14221A MH035FNEA 027402-16224d MH052FNEA 026402-19228F MH023FBEA 016402-142209 MH026FBEA MH035FBEA 016402-16223c MH052FBEA 016406-19224E MH020FVEA 007402-132219 MH023FVEA 004402-1420E7 MH026FVEA MH035FVEA 007402-16221A MH052FVEA 005406-19225E MH026FKEA 005600-14221d MH035FKEA 005600-162340 MH030FMEA 045024-164051 MH035FMEA MH052FMEA 045024-1940d5...
Page 56: Disassembly And Reassembly
4. Disassembly and Reassembly I Necessary Tools Item Remark +SCREW DRIVER MONKEY SPANNER Samsung Electronics...
Page 57: Outdoor Unit
Cabinet Front lower to detach the Cabinet Front. (Use +Screw Driver.) 3) Detach the Cabinet Front like the picture on the right side. 4) Loosen 1 screw(CCW)fixed to assemble Plate Control Out with Cabinet-Side RH. (Use +Screw Driver.) Samsung Electronics...
Page 58 5) Loosen 2 fixing screws(CCW)on the rear side of Cabinet-Side RH. (Use +Screw Driver.) 6) Loosen 4 screws(CCW)fixed to assemble Bracket Valve with Cabinet-Side RH. (Use +Screw Driver.) 7) Loosen 2 fixing screws(CCW)of Cabinet Side LF. (Use +Screw Driver.) Samsung Electronics...
Page 59 Ass’y Ass'y Control Out. Control Out 2) Detach several connectors from the PCB of Ass'y Control Out. 3) Detach 2 Connect Wires from Reactor. 4) Loosen 1 screw(CCW)fixed to assemble Ass'y Control Out with Partition. (Use +Screw Driver.) Samsung Electronics...
Page 60 2) Detach the Terminal Cover and detach the Connect Comp Wire from Compressor. 3) Disassemble the Felt Comp Sound. 4) Loosen the 3 bolts(CCW)at the bottom of Compressor like the picture on the right side. (Use Monkey Spanner.) Samsung Electronics...
Page 61 5) Loosen 2 fixing screws, 5 bolts and detach the Front Cabinet. (Use +Screw Driver.) 6) Loosen 2 fixing screws and pull up the Control Box. (Use +Screw Driver.) 7) Loosen 9 fixing screws and detach the Cabinet Side. (Use +Screw Driver.) Samsung Electronics...
Page 62 1) Loosen the fixing nut and detach the Fan. & (Use +Screw Driver.) Motor 2) Loosen 4 fixing bolts and detach the Motor. (Use +Screw Driver.) 3) Loosen 4 fixing bolts and detach the Bracket Motor. (Use +Screw Driver.) Samsung Electronics...
Page 63 2) Disassemble the Inlet and Outlet Pipe by & welding. Compressor 3) Loosen the fixing screws of the Heat Exchanger. (Use +Screw Driver.) 4) Detach the Heat Exchanger. 5) Loosen 3 nuts of the Compressor. (Use Monkey Spanner.) 6) Detach the Compressor. Samsung Electronics...
Page 64 3) Loosen 2 fixing screws of the Ass'y Control Out. (Use +Screw Driver.) 4) Loosen 6 fixing screws and detach the Cabinet Upper. (Use +Screw Driver.) 5) Loosen 2 fixing screws, 7 bolts and detach the Cabinet Front. (Use +Screw Driver.) Samsung Electronics...
Page 65 Disassembly and Reassembly Parts Procedure Remark 6) Loosen 2 fixing screw and pull up the Control Box. (Use +Screw Driver.) 7) Pull the felt and detach it. 8) Detach the Terminal Cover and detach the comp lead wire. 4-10 Samsung Electronics...
Page 66 2) Disassemble the Inlet and Outlet Pipe by welding. Compressor 3) Loosen the fixing screw of the Heat Exchanger. (Use +Screw Driver.) 4) Detach the Heat Exchanger. 5) Loosen 3 nuts of the Compressor. (Use Monkey Spanner.) 6) Detach the Compressor. Samsung Electronics 4-11...
Page 67: Indoor Unit
5. Exploded Views and Parts List 5-1 Indoor Unit 5-1-1 MH020FNEA/MH026FNEA/MH035FNEA/MH✳✳VF1-✳✳ Samsung Electronics...
Page 68 ASS'Y PANEL FRONT ASS'Y DB64-00989E PANEL FRONT HIPS DB92-01207A ASS'Y GRILLE AIR INLET ASS'Y DB90-03094A ASS'Y COVER DISPLAY ASS'Y DB63-01591A GUARD AIR FILTER DB97-02851B ASS'Y PLATE HANGER ASS'Y DB61-01638B HOLDER PIPE DB90-03965A ASS'Y COVER TERMINAL ASS'Y DB93-03170Z ASS'Y REMOCON ARH-463 Samsung Electronics...
Page 69 Exploded Views and Parts List 5-1-2 MH052FNEA Samsung Electronics...
Page 70 ASS'Y REMOCON ARH-463 DB96-03817A ASS'Y SUPPORT EVAP RH HIPS DB31-00267A MOTOR IN 220-240V~,50/60Hz,Class E DB94-00456B ASS'Y CROSS FAN OD92 DB97-02075A ASS'Y BOLT SPECIAL ASS'Y DB94-00455A ASS'Y RUBBER BEARING ASS'Y DB94-40007A ASS'Y BEARING MOTOR BEARING DB61-01977A BRACKET EVAP SGCC-M Samsung Electronics...
Page 71 Exploded Views and Parts List 5-1-3 MH023FBEA/MH026FBEA/MH035FBEA 3-4-1 Samsung Electronics...
Page 72 MOTOR STEP DC12V, 600gf.cm DB62-05155A SEAL-INSUL TRAY FR EPS(30) DB69-00839A CUSHION-TRAY RH EPS(30) DB96-09626A ASS'Y EVAP-TOTAL ASS'Y DB61-03333A HOLDER-EVAP HIPS DB31-00474A MOTOR FAN 0.3A,50/60Hz,35W,220/240V,1350rpm DB94-00455A ASS'Y BEARING-RUBBER ASS'Y DB94-01556A ASS'Y-CROSS FAN ASS'Y DB61-03296A HOLDER-PIPE HIPS DB70-00819A PLATE-HANGER SGCC-M Samsung Electronics...
Page 73 Exploded Views and Parts List 5-1-4 MH052FBEA Samsung Electronics...
Page 74 RUBBER-CAP DRAIN GUM-EPM DB94-00458B ASS'Y DRAIN-HOSE ASS'Y DB96-09670A ASS'Y EVAP-TOTAL ASS'Y DB61-03346A HOLDER-EVAP HIPS DB31-00479A MOTOR FAN 0.3A,50/60Hz,220/240V DB94-00455A ASS'Y BEARING-RUBBER ASS'Y DB94-01550A ASS'Y-CROSS FAN ASS'Y DB61-03335A HOLDER-PIPE HIPS DB90-03483A ASS'Y PLATE-HANGER ASS'Y DB61-03334A SUPPORT-EVAP HIPS DB61-03361A BRACKET-EVAP SGCC-M Samsung Electronics...
Page 75 Exploded Views and Parts List 5-1-5 MH020FVEA/MH023FVEA/MH026FVEA/MH035FVEA/MH052FVEA 13-1 13-3 13-2 1-10 1-11 1-12 1-10 1-13 1-14 Samsung Electronics...
Page 76 Exploded Views and Parts List Parts List Q'TY MH023FVEA Code No. Description Specification SA/ SNA MH020FVEA MH026FVEA MH052FVEA MH035FVEA DB92-01087K ASS'Y PANEL FRONT ASS'Y HALF MIRROR DB92-01086J ASS'Y PANEL FRONT ASS'Y HALF MIRROR DB64-01633A PANEL FRONT HIPS,EMPIRE SILVER DB64-01638A PANEL FRONT...
Page 77 Exploded Views and Parts List Parts List(cont.) Q'TY MH023FVEA Code No. Description Specification SA/ SNA MH020FVEA MH026FVEA MH052FVEA MH035FVEA DB96-03149A ASS'Y EVAP-SUPPORT RH ASS'Y DB96-03817A ASS'Y EVAP-SUPPORT RH ASS'Y DB93-04636A ASS'Y CONTROL IN ASS'Y DB93-04664A ASS'Y CONTROL IN ASS'Y DB90-02167B...
Page 78 MEMO Samsung Electronics 5-12...
Page 79 Exploded Views and Parts List 5-1-6 MH026FKEA / MH035FKEA 14-2 14-1 5-13 Samsung Electronics...
Page 80 TERMINAL BLOCK DAF 4P DB63-00168A COVER TERMINAL Fire-Resistant P.S(V0) DB94-00084A ASS'Y DRAIN ASS'Y DB94-00290A ASS'Y DRAIN PAN SUB ASS'Y DB95-00131A ASS'Y SENSOR FLOAT ASS'Y DB62-02199A VALVE CHECK ASS'Y DB67-00382A HOSE DRAIN DURITE-01 DB90-00589A ASS'Y CABINET-SIDE LF ASS'Y Samsung Electronics 5-14...
Page 81 Exploded Views and Parts List I P1SMA(1 way Cassette Panel) 5-15 Samsung Electronics...
Page 82 DB63-00163A COVER PCB CASE HIPS (UL94-V0) DB93-04488A ASS'Y PCB DISPLAY DB31-10153D MOTOR STEP MSFCC20A05 DB61-00535A HOLDER MOTOR HIPS (UL94-V0) DB64-00234B PANEL FRONT HIPS (UL94-V0) DB66-00159C BLADE-H HIPS (UL94-V0) DB64-00243B GRILLE FRONT HIPS (UL94-V0) DB64-00244A GRILLE INLET AIR Samsung Electronics 5-16...
Page 83 Exploded Views and Parts List 5-1-7 MH030FMEA/MH035FMEA/MH052FMEA 5-17 Samsung Electronics...
Page 84 MINI 4WAY CASSETTE DB63-01372A GUARD SAFTY HSWR,T2.5 DB32-00066E THERMISTOR EVAP IN 300mm,MINI 4WAY CASSETTE DB32-00029K THERMISTOR EVAP OUT 280mm,MINI 4WAY CASSETTE DB94-01287B ASS'Y DRAIN HOSE INSTALL MINI 4WAY CASSETTE DB94-01287A ASS'Y DRAIN HOSE INSTALL MINI 4WAY CASSETTE Samsung Electronics 5-18...
Page 85 Exploded Views and Parts List I PMSMA(Mini 4 way Cassette Panel) 5-19 Samsung Electronics...
Page 86 STS304,T0.5 DB69-01269A CUSHION-IN EPS,30 DB69-01270A CUSHION-OUT EPS,30 DB64-01420A GRILLE-AIR INLET ABS,WHT DB63-01423A FILTER-PRE MINI PP,BLK,ANTI BACTERIAL FILTER DB70-00302A PLATE-HANGER STS304,T0.5 6002-000534 SCREW-TAPPING PH,2S,M3,L8,ZPC(BLK),SWRCH18A 6002-000536 SCREW-TAPPING PH,2S,M4,ZPC(YEL) 6002-001079 SCREW-TAPPING TH,2S,M4,L10 6011-001493 BOLT-HEX M6,L10,ZPC(YEL),SWRM18A DB61-02480B CONNECTOR-MOTOR B POM,NATURAL WASHER Samsung Electronics 5-20...
Page 87 Exploded Views and Parts List 5-1-8 MH026FJEA/MH035FJEA 16 17 35-2 35-12 35-11 35-5 35-13 35-4 35-9 35-6 35-7 35-10 35-3 35-1 35-8 5-21 Samsung Electronics...
Page 88 ASS'Y CASE CONTROL PD ASSY 35-2 DB61-03540A SLIDER CASE PCB A ABS V0,T2.5 35-3 DB61-03541A SLIDER CASE PCB B ABS V0,T2.5 35-4 DB61-03537A CASE PCB MAIN ABS V0,T2.5 35-5 DB67-00896A CAP SWITCH ABS V0,T2.0 35-6 DB93-06169A ASS'Y PCB SUB SWITCH Samsung Electronics 5-22...
Page 89 DB61-03549A CASE PCB SWITCH ABS V0,T2.5 35-8 DB93-06164B ASS'Y PCB MAIN IN 35-9 DB65-00004U TERMINAL BLOCK 35-10 DB61-40291C HOLDER WIRE 35-11 DB63-02001A COVER CONTROL SGCC-M,T0.5 35-12 DB61-03550A CASE PCB ADDRESS ABS V0,T2.5 35-13 DB93-04640C ASS'Y PCB SUB 5-23 Samsung Electronics...
Page 90 MEMO Samsung Electronics 5-24...
Page 91 Exploded Views and Parts List 5-1-9 MH023FEEA/MH026FEEA/MH035FEEA 23-5 23-6 23-4 23-1 23-7 23-8 23-3 23-2 5-25 Samsung Electronics...
Page 92 HOLDER WIRE PP BLACK 23-5 DB65-00105L TERMINAL BLOCK 6P 6P, POWER 23-6 DB65-00105M TERMINAL BLOCK 6P 6P, COMMUNICATION 23-7 DB26-00080A TRANS POWER 230V, 50HZ 23-8 2301-001370 CAPACITOR 450V 1.5µF DB32-00142A ASS'Y THERMISTOR ASS'Y DB32-00141A THERMISTOR EVAP ASS'Y Samsung Electronics 5-26...
Page 93 Exploded Views and Parts List 5-1-10 MH052FUEA 14-3 14-2 14-8 14-5 14-4 14-1 14-6 14-7 5-27 Samsung Electronics...
Page 94 SGCC-M,T0.8 DB94-01697A ASS'Y DRAIN PAN ASS'Y DB61-03058A BRACKET MOTOR SGCC-M,T2.0 DB31-00514A MOTOR FAN YSK-140-200-4E1,0.7A,50HZ DB90-04047A ASS'Y CASE BLOWER UPPER ABS,T2.0 DB61-03060A CASE BLOWER-BOTTOM ABS,T2.0 DB67-00583A BLOWER-C DB97-03751A ASS'Y-BAND MOTOR ASS'Y DB32-00142B THERMISTOR-IN 10Kohm,103AT,-20~+100 DB32-00141D THERMISTOR EVAP 10Kohm,103AT,-20~+100 Samsung Electronics 5-28...
Page 95: Outdoor Unit
5-2 Outdoor Unit 5-2-1 MH040FXEA2B/MH18VF1X/MH19VF1X 17-2 17-1 14-1 14-2 14-3 14-4 14-5 14-9 14-12 14-6 14-7 14-10 14-8 14-11 14-13 15-3 15-4 15-5 15-6 15-2 15-1 5-29 Samsung Electronics...
Page 96 M5,ZPC(YEL) 15-4 DB63-00762A COVER TERMINAL GE-NORYL 15-5 6021-001142 GASKET EPDM 15-6 G8T200FUAEW COMPRESSOR BLDC DB96-08845A ASS’Y COND ASS’Y DB96-09247A ASS’Y-VALVE TOTAL ASS’Y 17-1 DB96-08860A ASS’Y-4 WAY VALVE ASS’Y 17-2 DB96-08905A ASS’Y-VALVE ASS’Y DB64-02028B SCREEN COND BAR HSWR(SC-90073T) Samsung Electronics 5-30...
Page 97 Exploded Views and Parts List 5-2-2 MH050FXEA2B 16-2 16-1 16-3 16-4 16-6 16-8 16-11 16-9 16-5 16-7 16-10 13-1 5-31 Samsung Electronics...
Page 98 PLATE-CONTROL OUT MAIN SGCC-M 16-8 DB65-00181D TERMINAL BLOCK 16-9 DB65-00181F TERMINAL BLOCK 16-10 DB95-01180A ASS'Y-TERMINAL BLOCK ASS'Y 16-11 DB93-06290A ASS'Y PCB DISPLAY ASS'Y 16-12 DB61-01097A HOLDER-WIRE CLAMP DB27-00042A REACTOR 5MH±5%,40.0±5V DB32-00175B THERMISTOR CONDENSER 103AT,204CTB DB32-00176A THERMISTOR 103AT,204CTB Samsung Electronics 5-32...
Page 99 Exploded Views and Parts List 5-2-3 MH060FXEA3B/MH070FXEA4B/MH080FXEA4B 16-2 16-1 16-3 16-4 16-6 16-7 16-10 16-8 16-5 16-9 13-1 5-33 Samsung Electronics...
Page 100: Samsung Electronics
TERMINAL BLOCK 16-10 DB95-01180A ASS’Y-TERMINAL BLOCK ASS’Y 16-11 DB93-06290A ASS’Y PCB SUB-DISPLAY ASS’Y 16-12 DB61-01097A HOLDER WIRE CLAMP DB27-00042A REACTOR 15A, 50Hz DB27-00043A REACTOR 20A, 50Hz DB32-00175B THERMISTOR COND 103AT,204CTB DB32-00176C THERMISTOR WIRE OUT/DISCHARGE 103AT,204CTB DB64-01231A HANDLE Samsung Electronics 5-34...
Page 101: Wiring Diagram
6. Wiring Diagram 6-1 Indoor Unit I MH✳✳✳FNEA/MH✳✳VF1-✳✳ This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 102 Indoor Unit(cont.) I MH✳✳✳FBEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 103 Wiring Diagram I MH✳✳✳FVEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 104 Wiring Diagram I MH✳✳✳FKEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 105 Wiring Diagram I MH✳✳✳FMEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 106 Wiring Diagram I MH023/026/035FEEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 107 Wiring Diagram I MH052FUEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 108 Wiring Diagram I MH✳✳✳FJEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 109: Outdoor Unit
6-2 Outdoor Unit I MH040FXEA2B/MH18VF1X/MH19VF1X This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 110 Wiring Diagram I MH050FXEA2B This Document can not be used without Samsung's authorization. Samsung Electronics 6-10...
Page 111 Wiring Diagram I MH060FXEA3B This Document can not be used without Samsung's authorization. 6-11 Samsung Electronics...
Page 112 Wiring Diagram I MH070FXEA4B/MH080FXEA4B This Document can not be used without Samsung's authorization. Samsung Electronics 6-12...
Page 113: Schematic Diagram
7. Schematic Diagram 7-1 Indoor Unit I MH✳✳✳FNEA/MH✳✳VF1-✳✳/MH✳✳FVEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 114: Indoor Unit
Indoor Unit I MH✳✳✳FBEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 115 Schematic Diagram I MH✳✳✳FKEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 116 Schematic Diagram I MH✳✳✳FMEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 117 Schematic Diagram I MH✳✳✳FJEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 118 Schematic Diagram I MH✳✳✳FEEA/MH✳✳✳FUEA This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 119: Outdoor Unit
7-2 Outdoor Unit 7-2-1 MH040FXEA2B/MH18VF1X/MH19VF1X I Inverter BLDC Fan SMPS Inverter Micom Communication This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 120 Schematic Diagram Schematic Diagram MH040FXEA2B/MH18VF1X/MH19VF1X(cont.) I Main Temperature sensor & EEV 485 Communication This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 121 Schematic Diagram Schematic Diagram 7-2-2 MH050FXEA2B/MH060FXEA3B/MH070FXEA4B/MH080FXEA4B Temperature sensor & EEV SMPS Inverter This Document can not be used without Samsung's authorization. Samsung Electronics...
Page 122: Pcb Diagram
8-1 MAIN PCB(Indoor Unit) I MH✳✳✳FNEA/MH✳✳VF1-✳✳(MAIN PCB) The red number connecter is not used. & Power Temperature Sensor Motor RPM Feedback Auto Grill Remocon Module HVPS(High voltage Generator) Humidity Sensor BLADE-H Step Motor Anions Display Indoor Fan Motor Samsung Electronics...
Page 123 #2:Motor driving signal output_1 #2:MPI driving signal output (+) #3:Motor driving signal output_2 #3:Motor driving signal output_2 #3:DV12V #4:Motor driving signal output_3 #4:Motor driving signal output_3 #4:MPI feedback signal input #5:Motor driving signal output_4 #5:Motor driving signal output_4 Samsung Electronics...
Page 124 Motor Rpm FeedBack Melody ROOM/EVA IN Download Connector EVE OUT COM1 Indoor Fan Motor COM2 POWER & SUB PCB Connection Blade Step Motor Module PCB Connection Auto Grille Step Motor 1 Display PCB Connection Auto Grill Step Motor2 Samsung Electronics...
Page 125 PCB Diagram I MH✳✳✳FNEA/MH✳✳✳FBEA/MH✳✳✳FVEA/MH✳✳✳FJEA/MH✳✳VF1-✳✳(SUB PCB) The red number connecter is not used. External Signal MAIN PCB Connection Samsung Electronics...
Page 126 PCB Diagram I MH✳✳✳FKEA The red number connecter is not used. & Ventilator Drain Pump Float Switch Connection Fan-Motor Step Motor Power EEV Connection Motor Rpm Feed-Back Display PCB Connection EVA Out Sensor COM1 & ROOM/EVA IN Sensor COM2 Samsung Electronics...
Page 127 DC12V Out(Wired Remocon Power) : YW396-02V(WHT) Panel Louver(Stepping Motor) : SMW250-10(WHT) Micom Program Download : SMW200-10(BLK) “ External Control Out(Error, Compressor State) : SMW250-04(RED) Display PCB : SMW200-9(WHT) ‘ External Control In(On/Off Control Signal) : SMW250-02(RED) SSR Fan Control : SMW250-03(WHT) Samsung Electronics...
Page 128 #2~#5. Control SIGNAL #2~#5.Communication Signal #1. Communication Signal F1 #1.Communication Signal F1 #2. Communication Signal F2 #2.Communication Signal F2 CN20-MICOM Download2 CN10-MICOM Download1 > For Developer,Not for field >For Developer, Not for field > 7pin Downloader >10pin Downloader Samsung Electronics...
Page 129 Heater Temperature Option Switch Wired Remote Controller Power(12V) Fan (Tap Control) Control Signal Ventilator & Drain Pump “ Display Hot Coil ‘ Operating Check Signal Fan (SSR) HALL IC Trans In Download Main Power COM 1 Trans out Samsung Electronics...
Page 130: Main Pcb(Outdoor Unit)
8-2 MAIN PCB(Outdoor Unit) I MH040FXEA2B/MH18VF1X/MH19VF1X(INVERTER) & Power N Power Relay Power L Comp. Connector Wire & BLDC Fan : YAW396-07V(WHT) Reactor Connector Wire Main PCB Connector : SMW200-07(WHT) Samsung Electronics...
Page 131 PCB Diagram I MH040FXEA2B/MH18VF1X/MH19VF1X(MAIN) & Inverter PCB Connector : SMW200-07(WHT) Display PCB Connector : SMW200-07(WHT) OLP/Cond.Te temperature Sensor : SMAW250A-04(WHT) Outdoor/Discharge Temperature Sensor L SMAW250A-04(RED) EEV Connector : SMAW250A-06(WHT) DC5V Connector : SMW250-03(WHT) & Communication Samsung Electronics 8-10...
Page 132 PCB Diagram I MH050FXEA2B/MH060FXEA3B/MH070FXEA4B/MH080FXEA4B The red number connecter is not used. Power N COND/OLP Temperature Sensor & Power L DIS/OUT Temperature Sensor BLDC FAN EEV Connector AC FAN Comp. Connector Wire Communication 485 Reactor Connector Wire 8-11 Samsung Electronics...
Page 133: Troubleshooting
The compressor stops intermittently in a The compressor stops intermittently or the fan speed of the COOL mode or DRY mode, and fan speed of the indoor unit decreases to prevent inside/outside air frozen indoor unit decreases. depending on the inside/outside air temperature. Samsung Electronics...
Page 134: Checking And Testing Operations
Total capacity of the indoor units Fan RPM (H:high,L:low,Blank:off ) Safety control Safety control • The EEV 2 and EEV 3 of MH040FXEA2B/MH050FXEA2B/MH18VF1X/ MH19VF1X models are always displayed as blank. • The EEV 3 of MH060FXEA3B model is always displayed as blank. Samsung Electronics...
Page 135 Button [K1] 1 times DIS 01 DIS 02 Display [DIS 01 ] is flickering on the setting time. Outdoor Temperature 0˚C or more less than 0˚C Time duration (Cool mode) (Heat mode) 5min~10min 20min~50min Samsung Electronics...
Page 136 - On this mode the controller will ignore the manual address number set on the rotary switch on the indoor PCB. - To confirm the indoor address number assigned by this mode, use "TEST MODE" and the address number will be displayed on the LED display on the indoor unit. Samsung Electronics...
Page 137 02--communication with indoor unit C; 03--communication with indoor unit D; ✳ In case of Manual address mode,you can do pipe check operation for check whether you connect the pipes correctly or not. But you need set indoor address switch yourselves. Samsung Electronics...
Page 138 Switch Setting and Testing Operation (cont.) TO SET ADDRESSING MANUALLY BY ROTARY TYPE PICTURE MODEL SWITCH “SW02 ” MH020FV(N)EA MH023FBEA MH026FB(V/N)EA MH035FB(V/N)EA MH052FB(V/N)EA MH026FKEA 1 WAY CASSETTE MH035FKEA MH030FMEA MIN 4 WAY MH035FMEA MH052FMEA MH026FEEA SLIM DUCT MH035FEEA MAS-DUCT MH052FUEA MH026FJEA DONSOLE MH035FJEA Samsung Electronics...
Page 139 Cooling mode (indoor unit check) Heating mode (indoor unit check) → Outlet air temp.-Inlet air temp : From 11°K to 14°K (indicative delta T) In heating mode,the indoor fan motor can remain off to avoid cold air blown into conditioned space. Samsung Electronics...
Page 140 Indoor unit heat exchanger in temperature sensor error (open/short) E237 Condenser temperature sensor error (open/short) E251 Compressor Discharge temperature sensor error (open/short) E251 Compressor OLP sensor error (open/short) E320 Please, The System turn off and replace sensor which is related. Guidance Samsung Electronics...
Page 141 Replace outdoor unit’s ass’y control or indoor unit’s Step 2 EEV Coil ass’y control. Basically, This error caused by communication between Indoor Units and Outdoor Unit. Guidance First of all, check the all communication connection and PCB’s status. Samsung Electronics...
Page 142 This is caused by protection mode behavior. Analysis This is indoor Evaporator Freezing protection mode. Step 1 Please, check indoor unit, whether inlet or outlet grill is closed. Step 2 Please, check indoor unit, whether indoor fan is working. 9-10 Samsung Electronics...
Page 143 Check point Remarks These Error codes only apply with Try-run mode, in case of system have some defect as result of try-run operation. Analysis ✳ Refer to self-detection algorithm (Check Error Code meaning and check it out) Samsung Electronics 9-11...
Page 144: Fault Diagnosis By Symptom
2 digit alternatively. Any Error code on LED display? Wait for 5 minutes to check error code Consult error code table because some error judgement needs long time Check Major parts(See 12-5) Consult error code(Next Page) 9-12 Samsung Electronics...
Page 145 ? Error related to outdoor controller except Consult LED pattern on wiring diagram on temperature sensor and communication outdoor controller between indoor unit and outdoor unit ? See Error Code Table and Check “Main checking point” Samsung Electronics 9-13...
Page 146 After power off this error will display until Blink DC LINK capacitor discharged.(Max 20sec.) Blink Option error (EEPROM error) Abnormal condition Blink Comp. peak current (Over Current) Blink Comp. starting error Comp. rotation error Blink DC-Link voltage error Blink Comp. V Limit Error 9-14 Samsung Electronics...
Page 147 Press K4 key on the outdoor display PCB for several times to change the display to sensor temperature value. Left 1 digit of the LED is data index and Right 3 digits are the value Index Value Remark Estimated Primary current value from The unit is 0.1A Compressor current Samsung Electronics 9-15...
Page 148 Press K4 key on the outdoor display PCB for several time to change the display to sensor temperature value. Left 1 digit of the LED is data index and Right 2 digits are the value. Index Value Remark Discharge sensor temperature OLP sensor temperature The unit is degree C Condenser sensor temperature Outdoor sensor temperature 9-16 Samsung Electronics...
Page 149 The step value range is MH040FXEA2B/MH050FXEA2B EEV-C step MH18VF1X/MH19VF1X between Zero and 480. MH060FXEA3B/MH070FXEA4B EEV-D step MH080FXEA4B 9-3-7 Pipe matching See 12-2 "Checking and Testing operations". 9-3-8 Checking Motor in indoor unit See 12-5 "Fault Diagnosis of Major Parts". Samsung Electronics 9-17...
Page 150: Pcb Inspection
9-4-2 Procedure 12-4-2 The parts should be replaced in the following procedure. Check for any faulty part. Detach the faulty part. Replace it with a new part. Check the operation of the new part. The repair is completed. 9-18 Samsung Electronics...
Page 151: Reference For Installation
• It is harmful to the air conditioner if it is used in the following environments: greasy areas (including areas near machines), salty areas such as coast areas, areas where sulfuric gas is present such as hot spring areas. Contact your dealer for advice. Samsung Electronics 10-1...
Page 152: Remote Control Unit
2. Make sure that you put the remote control unit in an area not exposed to direct sunlight, and where there is no source of heat. 3. Make sure that you use the remote control unit in an area away from TVs, audio units, cordless phones, fluorescent lighting fixtures and other electrical appliances (at least 1 meter). 10-2 Samsung Electronics...
Page 153: Connecting Up And Purging The Circuit
183kgf•cm with a torque wrench. Service port 7. Check for gas leakage. • At this time, especially check for gas leakage from the 3 way valve’s stem nuts, and from the service port cap. Samsung Electronics 10-3...
Page 154 6 Mount the valve stem nuts and the service port cap to the valve,and tighten them at the torque of 183kgf•cm with a torque wrench. 7 Check for gas leakage. - At this time,especially check for gas leakage from the 3-way valve ’s stem nuts,and from the service port cap. 10-4 Samsung Electronics...
Page 155: Refrigerant Refill
7) Stop operation of the air conditioner. 8) Close the 3 way valve, disconnect the pressure gauge, and open the 3 way valve again. 9) Close the cap of each valve. Samsung Electronics 10-5...
Page 156 7) Stop operation of the air conditioner. 8) Close the 5/8" service valve, disconnect the pressure gauge, and open the 5/8" service valve again. 9) Close the cap of each valve. 10-6 Samsung Electronics...
Page 157: Refrigerant Adjustment
85% of the rated voltage. And then, a voltage meter will be useful to check the rate of the voltage drop. Samsung Electronics 10-7...
Page 158: Flare Nut Fixing Torque
10-5 Flare Nut Fixing Torque Torque (kg . cm) Torque(kg . cm) Outer diameter Fixing Torque Final Torque ø 6.35 mm (Liquid Side) ø 9.52 mm (Gas Side) ø 12.7 mm (Gas Side) 10-8 Samsung Electronics...
Page 159: Pump Down" Procedure
6. Make sure you do not bend the connection pipes in the middle and store together with the cables. • 7. Move the indoor and outdoor units to a new location. • 8. Remove the mounting plate for the indoor unit and move it to a new location. Samsung Electronics 10-9...
Page 160 6. Make sure you do not bend the connection pipes in the middle and store together with the cables. • 7. Move the indoor and outdoor units to a new location. • 8. Remove the mounting plate for the indoor unit and move it to a new location. 10-10 Samsung Electronics...
Page 161: Reference Information
200~220V, 50Hz Free Inverter Version 220~240V, 50Hz Redd Digital Scroll _,12.. Indoor 127V, 50Hz _,A,B.. Outdoor Indoor/Outdoor Type Refrigerant 1 way Slim 1 way R407C Mini 4 way R410A Silhouette Duct Slim Vivave Moderato Console CONV Outdoor Samsung Electronics 11-1...
Page 162 FREE JOINT MULTI FOR EUROPE Buyer code Product Type Capa Serial Version Indoor Capacity Multi *K BTU Basic - CAP Indoor(K BTU) MR(02R~) Outdoor Mode Refrigerant R410A Inverter Semi Product Indoor R407C Outdoor Indoor Type Vivave Moderato 11-2 Samsung Electronics...
Page 163: Refrigerating Cycle Diagram
11-2 Refrigerating Cycle Diagram I MH040FXEA2B/MH18VF1X/MH19VF1X Samsung Electronics 11-3...
Page 164 Reference Information I MH050FXEA2B 11-4 Samsung Electronics...
Page 165 Reference Information I MH060FXEA3B Samsung Electronics 11-5...
Page 166 Reference Information I MH070FXEA4B/MH080FXEA4B 11-6 Samsung Electronics...
Page 167: Pressure & Capacity Mark
Heat exchanger; A device, used to transfer heat from a fluid on one side of a barrier to a fluid ASS’Y EVAP/ASS’Y COND on the other side without bringing the fluids into direct contact. (Full name : assemble evaporator / assemble condenser) Samsung Electronics 11-7...
Page 168: Q & A For Non-Trouble
It occurs when the drain pump is plugged out or it is out of order. Check the power of the drain pump and the position of the drain hose, and when the pump is faulty, contact the drain pump manufacturer. Samsung Electronics do not manufacture drain pumps. So, we are not able to correct the drain pump problems.
Page 169 Set up a sun blind over the outdoor unit and clear the neighboring obstacles from the outdoor unit to provide good ventilation. When it goes off frequently during a heat wave, it would prevent the turn-off and increase the cooling capacity cleaning the outdoor unit or spraying some water to the heat exchanger. Samsung Electronics 11-9...
Page 170 There is a cost table. But, our service engineer needs to visit to total up the cost correctly. When you move in, make sure to contact Samsung Electronics Service Center or Authorized Service Agent in advance to streamline the process.
Page 171: Common Sense Of Refrigeration
But generally the value of fresh indoor temperature is that below 0.2(m/s) of indoor air circulation, the temperature is 21~28˚C when the wall temperature is the same as the indoor's and relative humidity is 30~31% in summer, the winter temperature is 20~24˚C and relative humidity is 30~60% in winter. Samsung Electronics 11-11...
Page 172 Mideast & Africa http://mea.samsungportal.com © Samsung Electronics Co., Ltd. Mar. 2008. This Service Manual is a property of Samsung Electronics Co., Ltd. Any unauthorized use of Manual can be punished under applicable Printed in Korea. International and/or domestic law.

Samsung MH020FVEA Service Manual

1 Precautions

2 Product Specifications

3 Alignment and Adjustments

4 Disassembly and Reassembly

5 Exploded Views and Parts List

6 Wiring Diagram

7 Schematic Diagram

8 PCB Diagram

9 Troubleshooting

10 Reference for Installation

11 Reference Information

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